I considered it, then dropped it. The Google Play Store definitely has a mechanism of adding more data/bundles to your application, but (when I investigated this) you'd need to drag in Google-provided libraries and tie your app to the Google Play Store. I dislike lock-in and do my best to be able to independently develop and distribute my product. So expansion files/bundles didn't look interesting.
To compensate, the Itch.io Android APK is actually pretty much identical to the Google Play Store version, but it just includes all 3D assets too.
To compensate, the Itch.io Android APK is actually pretty much identical to the Google Play Store version, but it just includes all 3D assets too.